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Cheap flights from Colorado to Sofia from $276

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Sofia departing on 7/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Colorado to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:05 pm - 11:10 pm
DEN
-
SOF
22h 05m
1 stop
Multiple Airlines Logo
6:20 am - 7:00 pm
SOF
-
DEN
21h 40m
2 stops
$538Multiple Airlines
Mon, May 11 - Fri, May 29
Lufthansa Logo
4:05 pm - 11:10 pm
DEN
-
SOF
22h 05m
1 stop
Lufthansa Logo
6:10 am - 2:20 pm
SOF
-
DEN
17h 10m
1 stop
$539Lufthansa
Mon, May 11 - Fri, May 29
Lufthansa Logo
4:05 pm - 11:10 pm
DEN
-
SOF
22h 05m
1 stop
Lufthansa Logo
6:10 am - 2:20 pm
SOF
-
DEN
17h 10m
1 stop
$569Lufthansa
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
10:37 am - 1:25 pm
DEN
-
SOF
41h 48m
2 stops
British Airways Logo
9:25 pm - 4:30 pm
SOF
-
DEN
28h 05m
1 stop
$576British Airways
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
6:40 pm - 7:20 pm
DEN
-
SOF
15h 40m
1 stop
British Airways Logo
8:10 pm - 4:30 pm
SOF
-
DEN
29h 20m
1 stop
$579British Airways
Sun, Apr 26 - Mon, May 11
Turkish Airlines Logo
8:20 pm - 7:45 am
DEN
-
SOF
27h 25m
1 stop
Turkish Airlines Logo
3:50 pm - 6:25 pm
SOF
-
DEN
35h 35m
1 stop
$595Turkish Airlines
Fri, Mar 27 - Mon, Apr 6
Turkish Airlines Logo
8:20 pm - 8:50 pm
DEN
-
SOF
16h 30m
1 stop
Turkish Airlines Logo
9:35 am - 6:25 pm
SOF
-
DEN
17h 50m
1 stop
$600Turkish Airlines
Thu, Mar 26 - Tue, Apr 7
United Airlines Logo
8:20 pm - 10:45 pm
DEN
-
SOF
17h 25m
1 stop
United Airlines Logo
6:05 am - 6:55 pm
SOF
-
DEN
21h 50m
1 stop
$630United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
1:25 pm - 10:45 pm
DEN
-
SOF
25h 20m
2 stops
United Airlines Logo
6:10 am - 2:40 pm
SOF
-
DEN
16h 30m
1 stop
$633United Airlines
Thu, Mar 12 - Wed, Mar 18
United Airlines Logo
4:15 pm - 10:45 pm
DEN
-
SOF
21h 30m
2 stops
United Airlines Logo
6:05 am - 6:55 pm
SOF
-
DEN
21h 50m
1 stop
$635United Airlines
Wed, Mar 4 - Sun, Mar 8

Lufthansa flights from Colorado to Sofia

Our best Lufthansa deals on Colorado to Sofia flight tickets
Lufthansa
May 11
DEN4:05 pmDenver Intl
22h 05m
1 stop
SOF11:10 pmSofia
May 29
SOF6:10 amSofia
17h 10m
1 stop
DEN2:20 pmDenver Intl
$539
Lufthansa
Apr 22
DEN4:05 pmDenver Intl
22h 05m
1 stop
SOF11:10 pmSofia
Apr 29
SOF6:10 amSofia
17h 10m
1 stop
DEN2:20 pmDenver Intl
$569
Lufthansa
Mar 24
DEN5:20 pmDenver Intl
17h 00m
1 stop
SOF6:20 pmSofia
Mar 31
SOF6:10 amSofia
17h 10m
1 stop
DEN2:20 pmDenver Intl
$580

United Airlines flights from Colorado to Sofia

Our best United Airlines deals on Colorado to Sofia flight tickets
United Airlines
Mar 24
DEN1:25 pmDenver Intl
15h 50m
2 stops
SOF1:15 pmSofia
Mar 31
SOF6:10 amSofia
17h 10m
1 stop
DEN2:20 pmDenver Intl
$585
United Airlines
Mar 24
DEN11:15 amDenver Intl
18h 00m
2 stops
SOF1:15 pmSofia
Mar 31
SOF6:10 amSofia
19h 19m
2 stops
DEN4:29 pmDenver Intl
$593
United Airlines
Mar 12
DEN1:25 pmDenver Intl
25h 20m
2 stops
SOF10:45 pmSofia
Mar 18
SOF6:10 amSofia
16h 30m
1 stop
DEN2:40 pmDenver Intl
$633

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 7, 2026.
Use the filters below to find and compare flights from Colorado to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 5/11

4:05 pm-11:10 pm

1 stop22h 05m

Sofia

Fri 5/29

6:20 am-7:00 pm

2 stops21h 40m

$538

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 5/11

4:05 pm-11:10 pm

1 stop22h 05m

Sofia

Fri 5/29

6:10 am-2:20 pm

1 stop17h 10m

$539

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 4/22

4:05 pm-11:10 pm

1 stop22h 05m

Sofia

Wed 4/29

6:10 am-2:20 pm

1 stop17h 10m

$569

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 4/22

10:37 am-1:25 pm

2 stops41h 48m

Sofia

Wed 4/29

9:25 pm-4:30 pm

1 stop28h 05m

$576

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 4/26

6:40 pm-7:20 pm

1 stop15h 40m

Sofia

Mon 5/11

8:10 pm-4:30 pm

1 stop29h 20m

$579

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Fri 3/27

8:20 pm-7:45 am

1 stop27h 25m

Sofia

Mon 4/6

3:50 pm-6:25 pm

1 stop35h 35m

$595

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 3/26

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Tue 4/7

9:35 am-6:25 pm

1 stop17h 50m

$600

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 3/4

8:20 pm-10:45 pm

1 stop17h 25m

Sofia

Sun 3/8

6:05 am-6:55 pm

1 stop21h 50m

$630

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 3/12

1:25 pm-10:45 pm

2 stops25h 20m

Sofia

Wed 3/18

6:10 am-2:40 pm

1 stop16h 30m

$633

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 3/4

4:15 pm-10:45 pm

2 stops21h 30m

Sofia

Sun 3/8

6:05 am-6:55 pm

1 stop21h 50m

$635

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Sofia from

How to get the cheapest flight ticket from Colorado to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Colorado is in April. Flight prices, which tend to average around $581, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Sofia from Colorado during November instead. Flights to Sofia in November, while not as cheap as those in April, still average around $596.

How far in advance should I book a flight to Sofia?

You are more likely to see cheaper flights to Sofia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $796 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Colorado for as low as $652 on momondo.

Can stopping save me money on Colorado to Sofia flights?

You could potentially save up to 60% on your flight if you consider stops on a Colorado to Sofia flight.

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Fastest flight time

17h 25m

Direct flights

None
The fastest flight from Colorado to Sofia takes 17h 25m
There are no direct flights from Colorado to Sofia. There are no popular flight routes from Colorado to Sofia.
Search flight deals

  • When did momondo last update prices for flights from Colorado to Sofia Airport?

    Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado to Sofia Airport?

  • How old do you have to be to fly from Colorado to Sofia Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $535Free CancellationRating
7.3
4,207 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $616Free CancellationRating
6.8
7,773 reviews
Search Lufthansa flights
United AirlinesPriceFrom $686Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sofia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sofia from Colorado.

Can I find flights from Colorado to Sofia with flexible booking policies on momondo?

Flights from Colorado to Sofia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Sofia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado to Sofia.

I’m not ready to book a flight from Colorado to Sofia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Sofia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sofia and let you know when they change.

An easier way to manage your Sofia trip

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Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Turkish Airlines
United Airlines
Lufthansa